2
Categorical Variables Based on observations Univariate – single categorical variable  Example: Sample 100 people & ask if they agree or disagree with a question. Bivariate – uses two categorical variables  Example: Sample 100 people & ask if they are male/female and what political party they support.

9
A researcher believes that the number of homicides crimes in CA by season is uniformly distributed. To test this claim, you randomly select 1200 homicides from a recent year and record the season when each happened. SeasonFreq Spring312 Summer299 Fall297 Winter293

10
Results from a previous survey asking people who go to movies at least once a month are shown in the table below. To determine whether this distribution is still the same, you randomly select 1000 people who go to movies at least once a month and record the age of each. Are the distributions the same? AgeSurveyFreq % % % % %207